ZarankiewiczDB,

an online database of Zarankiewicz numbers. home; recent; tables; submit; theorems & references

z(11,19) = 55

11111
11111
11111
11111
11111
11111
11111
11111
11111
11111
11111

Found by the scaffold algorithm.

(0.04150779 seconds, score = 55, 215 recursive calls, max depth = 26)

lower bound = 55, submitted by Andrew Kay on April 22nd, 2016 (link, raw)

By the density principle on z(11,18).

upper bound = 55, submitted on April 22nd, 2016 (link)

Submit a result or comment?